The 5-11, 175-pound athlete had narrowed his list of finalists to UNC, Michigan and Louisville.
Jackson accumulated over 2,000 yards on the ground and through the air in 2008 for Armwood, earning all-county honors.
His teammate, safety Angelo Hadley, committed to UNC last month.
INSIDE CAROLINA PREMIUM BOARD:
LIVE REPORTS: Mywan Jackson's Announcement